Merge pull request #3101 from code2828/code2828-patch-scala3-book-scala-for-java-devs

Patches for scala3-book/scala-for-java-devs.md (https://docs.scala-lang.org/scala3/book/scala-for-java-devs.html)

Author: sjrd

_overviews/scala3-book/scala-for-java-devs.md

@@ -1064,7 +1064,7 @@ Pair<String, Integer> pair =
 
 Triplet<String, Integer, Double> triplet =
   Triplet.with("Eleven", 11, 11.0);
-Quartet<String, Integer, Double,Person> triplet =
+Quartet<String, Integer, Double, Person> quartet =
   Quartet.with("Eleven", 11, 11.0, new Person("Eleven"));
 ```